vpn-watch: restart ipsec only if ip's has changed.

[people/pmueller/ipfire-2.x.git] / src / scripts / vpn-watch

diff --git a/src/scripts/vpn-watch b/src/scripts/vpn-watch
index cd65a1d0285a0bf0b15304d5e31e6f645a3872ff..3f7757adb288973773133fe2a5dd7e302b41a798 100755 (executable)
--- a/src/scripts/vpn-watch
+++ b/src/scripts/vpn-watch
@@ -1,7 +1,11 @@
 #!/usr/bin/perl 
-################################################## 
-#####     VPN-Watch.pl     Version 0.1       ##### 
-################################################## 
+##################################################
+#####     VPN-Watch.pl     Version 0.4c      #####
+##################################################
+#                                                #
+#   VPN-Watch is part of the IPFire Firewall     #
+#                                                #
+##################################################
 
 use strict;
 
@@ -9,16 +13,29 @@ require '/var/ipfire/general-functions.pl';
 my @vpnsettings;
 my $i = 0;
 my $file = "/var/run/vpn-watch.pid";
+my $debug = 0;
+
+if ( -e $file ){
+  logger("There my be another vpn-watch runnning because $file exists, vpn-watch will try kill the process.");
+  open(FILE, "<$file");
+    my $PID = <FILE>;
+    close(FILE);
+    system("kill -9 $PID");
+  }
 
 system("echo $$ > $file");
     
 while ( $i == 0){
-  if (open(FILE, "${General::swroot}/vpn/config")) {
+  if ($debug){logger("We will wait 60 seconds before next action.");}
+    sleep(60);
+  
+  if (open(FILE, "<${General::swroot}/vpn/config")) {
     @vpnsettings = <FILE>;
     close(FILE);
     unless(@vpnsettings) {exit 1;}
   }
 
+my $status = `ipsec whack --status`;
 foreach (@vpnsettings){
  my @settings = split(/,/,$_);
 
@@ -28,25 +45,24 @@ foreach (@vpnsettings){
   if ($settings[29] ne 'on'){next;}
  
   my $remotehostname = $settings[11];
+  
+  if ($debug){logger("Checking connection to $remotehostname.");}
+  
   my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
-  if ($remoteip eq ""){next;}
-  if (system("ipsec whack --status | grep $remoteip >/dev/null")){
-    logger("Remote IP for host $remotehostname has changed or is not connected, restarting connection to $remoteip.");
-    system("/usr/local/bin/ipsecctrl S $settings[0]");
-    next;
+  if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
+  my $ipmatch= `echo "$status" | grep $remoteip | grep $settings[2]`;
+  
+  if ( $ipmatch eq '' ){
+    logger("Remote IP for host $remotehostname-$remoteip has changed, restarting ipsec.");
+    system("/usr/local/bin/ipsecctrl S");
+    last; #all connections will reloaded
   }
-  my $hostip = `cat /var/ipfire/red/local-ipaddress 2>/dev/null`;
-  chomp($hostip);
-  if (system("ipsec whack --status | grep $hostip >/dev/null")){
-    logger("Our own IP has changed to $hostip restarting connection.");
-    system("/usr/local/bin/ipsecctrl S $settings[1]");
-    next;}  
-  }
-  logger("Nothing was done.");
-  sleep(300);
+ }
+ if ($debug){logger("All connections may be fine nothing was done.");}
 }
 
 sub logger {
         my $log = shift;
         system("logger -t vpnwatch \"$log\"");
 }
+